Author Topic: SpaceX Falcon 9 : SES 11/Echostar 105 : Oct 11, 2017 : Discussion  (Read 55767 times)

Offline Steven Pietrobon

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I'm with Gongora here. 5400kg vs 5300kg for SES-10, so I would be surprised if SpaceX didn't at least attempt an ASDS recovery.

Link below says 5200 kg, so looks like ASDS for sure.

http://forum.nasaspaceflight.com/index.php?topic=43728.msg1725004#msg1725004
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Offline rpapo

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I'm with Gongora here. 5400kg vs 5300kg for SES-10, so I would be surprised if SpaceX didn't at least attempt an ASDS recovery.

Link below says 5200 kg, so looks like ASDS for sure.

http://forum.nasaspaceflight.com/index.php?topic=43728.msg1725004#msg1725004
Titanium grid fins, anyone?  Sounds like a good flight for them, as it should be hotter than the last few.
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Offline John Alan

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Thanks to all for the replies...  :)

My thinking though... is S1#1031 is an almost year old block ?3? stage...yes?
SO... while putting Ti fins on it and trying to burn it down on an ASDS try makes some sense...
It's just as likely to be surplus and headed for scrap as the Block 5's start crowding the barns...
I guess we will find out soon enough...  :P

Online AncientU

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Thanks to all for the replies...  :)

My thinking though... is S1#1031 is an almost year old block ?3? stage...yes?
SO... while putting Ti fins on it and trying to burn it down on an ASDS try makes some sense...
It's just as likely to be surplus and headed for scrap as the Block 5's start crowding the barns...
I guess we will find out soon enough...  :P

Headed for scrap after re-flight wear and tear is analyzed... got to get the booster back for that.

ASDS is my bet.
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Online 2megs

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Here’s SES press release:

Quote
Echostar 105/SES-11 Shipped from Toulouse to the Cape for SpaceX Launch

Written on 20 Sep 2017

With 12 days to go until the NET, I have to think that either:

1. The satellite was already there, and the press release just is late, or...

2. SpaceX+SES have gotten much faster at integration than the SpaceX payload guide suggests, or...

3. October 2 isn't realistic.

Anyone have any idea which?
« Last Edit: 09/20/2017 03:22 PM by 2megs »

Offline IntoTheVoid

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Here’s SES press release:

Quote
Echostar 105/SES-11 Shipped from Toulouse to the Cape for SpaceX Launch

Written on 20 Sep 2017

With 12 days to go until the NET, I have to think that either:

1. The satellite was already there, and the press release just is late, or...

2. SpaceX+SES have gotten much faster at integration than the SpaceX payload guide suggests, or...

3. October 2 isn't realistic.

Anyone have any idea which?

From this very thread, only 11 posts ago...

[Spaceflight Now] Launch operators expect minimal delays from Hurricane Irma
Quote
SES officials said the SES 11/EchoStar 105 satellite weathered the storm without damage inside a SpaceX-owned clean room in a hangar near pad 40. If ground crews can resume work on the satellite within a few days, the payload could still be ready for liftoff in early October.

Offline crandles57

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Quote
10 days (Sept. 29) to SpaceX Falcon 9 (SES-11) Static Fire...at 39A. Oct. 2 launch, then all hands on deck to prep 39A TEL for Falcon Heavy.

https://twitter.com/NASASpaceflight/status/910239656779943937

dated 19 Sep 2017

Seems suggestive of move to SLC-40 even if followed by
Quote
You know I dare not call 40 until I see it on a schedule :)

Offline macpacheco

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There's a distinct possibility that SES required an expendable full performance launch for this launch.
I'd say its 50/50 between ASDS recovery and expendable for full performance.
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Offline ZachS09

There's a distinct possibility that SES required an expendable full performance launch for this launch.
I'd say its 50/50 between ASDS recovery and expendable for full performance.

I thought that SES-11/EchoStar 105 weighed 5,200 kilograms and Falcon 9's maximum payload to GTO while recovering the first stage was 5,500 kilograms.
"Liftoff of Falcon 9: the world's first reflight of an orbital-class rocket."

Offline macpacheco

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There's a distinct possibility that SES required an expendable full performance launch for this launch.
I'd say its 50/50 between ASDS recovery and expendable for full performance.

I thought that SES-11/EchoStar 105 weighed 5,200 kilograms and Falcon 9's maximum payload to GTO while recovering the first stage was 5,500 kilograms.

That depends on which orbit SpaceX will target for the launch.
5,500 Kg is for recovery on a standard GTO-1800 m/s mission.
Target GTO-1600 m/s (or better) and recovery might not be possible.
That's what full performance means for a launch like that.
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Offline zubenelgenubi

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Cross-posting a re-post from the NROL-52 thread:
Re-posting some information re: time-proximate launches, originally from the TDRS-M thread.
Thank you again to Jim.
***

48 hours or less to re-configure the Eastern range.
Launches on October 5 and 7, both from KSC/Canaveral, are possible.

Re: TDRSS use/possible conflict of use as part of launch ops.
Atlas V and Delta IV use TDRSS; Falcon 9 does not.

NSF experts, please correct if I'm wrong:

1.  Currently, it takes approximately 3 days to reconfigure the launch range between Canaveral/KSC launches.  Correct?

2.  Some, but not all United States launches use TDRSS during launch.  Atlas V/Delta IV: yes; Falcon 9: no?
***

3.  Launching TDRS-M from Canaveral on 8/10, followed by NROL-42 from Vandenberg, both on Atlas V's, is eminently do-able, yes?

4. Launching NROL-42 on Atlas V, from Vandenberg on 8/14, followed by launching Dragon, on Falcon 9, from KSC later on the same day--also possible?  No interference between the launch assets?

5. Are there any personnel that will work 2, or all 3, of these launches?

Thank you in advance!

1. 48 or less

2. correct

3. yes, but not going to happen

4. yes

5.  yes
« Last Edit: 09/22/2017 05:47 PM by zubenelgenubi »
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Offline ZachS09

I haven't done this in 14 months, but I'll be recording video of the launch of SES-11/EchoStar 105 from one of Embry-Riddle's observation decks instead of covering the whole thing from start to finish.

Should be a picturesque view given that the university is 48.22 miles (77.6 kilometers) away from LC-39A.
"Liftoff of Falcon 9: the world's first reflight of an orbital-class rocket."

Online obi-wan

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Since it's only a few days until flight, have we gotten any definitive word on whether SES-11 is going to be an ASDS recovery or full expendable?

Offline gongora

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Since it's only a few days until flight, have we gotten any definitive word on whether SES-11 is going to be an ASDS recovery or full expendable?

It should be ASDS based on the mass (5200kg), and the FCC permit we think corresponds to this flight has ASDS landing.  It's a similar mass to SES-10.

Offline Flying Beaver

Since it's only a few days until flight, have we gotten any definitive word on whether SES-11 is going to be an ASDS recovery or full expendable?

It should be ASDS based on the mass (5200kg), and the FCC permit we think corresponds to this flight has ASDS landing.  It's a similar mass to SES-10.

Also Elon says so.

elonmusk Aiming for two rocket landings in 48 hours this weekend
« Last Edit: 10/04/2017 04:02 AM by Flying Beaver »
Saw OG-2 Booster Land in person 21/12/2015.

Offline Eagandale4114

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Since it's only a few days until flight, have we gotten any definitive word on whether SES-11 is going to be an ASDS recovery or full expendable?

It should be ASDS based on the mass (5200kg), and the FCC permit we think corresponds to this flight has ASDS landing.  It's a similar mass to SES-10.

Also Elon says so.

elonmusk Aiming for two rocket landings in 48 hours this weekend

Direct link to the post: https://www.instagram.com/p/BZzchfKg07f/?taken-by=elonmusk

Offline vaporcobra

And FWIW, per Musk's 48 hours, the current schedule actually points to 36 38 hour back-to-back landings if schedules hold. Weather for the rest of the week at KSC is looking rainy and somewhat stormy, so upper level winds may be a bit rowdy. We'll see.
« Last Edit: 10/04/2017 05:58 PM by vaporcobra »
spaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaace

Offline Comga

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And FWIW, per Musk's 48 hours, the current schedule actually points to sub-36 hour back-to-back landings if schedules hold. Weather for the rest of the week at KSC is looking rainy and somewhat stormy, so upper level winds may be a bit rowdy. We'll see.
Nit: Because of the time zone difference it's less than 38 hours
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline Mike_1179

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Hope this slows down or track on the western side of the cone.

Offline spacenut

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When will SpaceX post the webcast information?

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